CBSE Class 7 Mathematics Rational Numbers Assignment Set 04

Question. \(\frac{p}{q}\) is a rational number when
(a) \(p=0, q \neq 0\)
(b) \(p=0, q=0\)
(c) \(p \neq 0, q=0\)
(d) \(p=1, q=0\)
Answer: (a) \(p=0, q \neq 0\)

Question. \(0.16\) is equivalent to
(a) \(0.32\)
(b) \(0.106\)
(c) \(0.160\)
(d) \(1.60\)
Answer: (c) \(0.160\)

Question. The standard form of \(-\frac{32}{40}\) is
(a) \(-\frac{32}{40}\)
(b) \(-\frac{4}{5}\)
(c) \(\frac{4}{-5}\)
(d) \(\frac{32}{-40}\)
Answer: (b) \(-\frac{4}{5}\)

Question. Which pair shows equivalent rational number
(a) \(\frac{3}{4}\) , \(\frac{6}{8}\)
(b) \(\frac{5}{6}\) , \(\frac{5}{12}\)
(c) \(\frac{3}{2}\) , \(\frac{3}{4}\)
(d) None of the options
Answer: (a) \(\frac{3}{4}\) , \(\frac{6}{8}\)

Question. \(-3\) Can be written in the form of \(\frac{p}{q}\) as
(a) \(\frac{-3}{-1}\)
(b) \(\frac{-3}{0}\)
(c) \(\frac{0}{-3}\)
(d) \(\frac{-3}{1}\)
Answer: (d) \(\frac{-3}{1}\)

Question. \(-3 \frac{2}{7}\) Can be written in the form of \(\frac{p}{q}\) as
(a) \(-\frac{23}{7}\)
(b) \(\frac{7}{23}\)
(c) \(\frac{-7}{23}\)
(d) None of the options
Answer: (a) \(-\frac{23}{7}\)

Question. If \(\frac{3}{7}\) and \(\frac{x}{14}\) are equivalent rational numbers , the value of \(x\) is
(a) 3
(b) 4
(c) 6
(d) 1
Answer: (c) 6

Question. \(\frac{1}{5} + \frac{x}{15} = 1\) , the value of \(x\) is
(a) \(x=12\)
(b) \(x=15\)
(c) \(x=10\)
(d) \(x=20\)
Answer: (a) \(x=12\)

Question. The sum of \(\frac{1}{2}\) , \(\frac{1}{4}\) and \(\frac{1}{8}\) is
(a) \(\frac{3}{8}\)
(b) \(\frac{5}{8}\)
(c) \(\frac{7}{8}\)
(d) \(\frac{8}{7}\)
Answer: (c) \(\frac{7}{8}\)

Question. \(-\frac{2}{3} + \frac{1}{6}\) is
(a) \(\frac{3}{6}\)
(b) \(-\frac{1}{2}\)
(c) \(+\frac{5}{6}\)
(d) \(-\frac{5}{6}\)
Answer: (b) \(-\frac{1}{2}\)

Question. \(2 \frac{3}{4} + \left(1 \frac{7}{8}\right) + \left(-\frac{1}{12}\right)\) is
(a) \(\frac{109}{24}\)
(b) \(\frac{108}{24}\)
(c) \(\frac{107}{24}\)
(d) \(\frac{106}{24}\)
Answer: (a) \(\frac{109}{24}\)

Question. The additive inverse of \(\left(-\frac{3}{2}\right)\) is
(a) \(\frac{2}{3}\)
(b) \(-\frac{2}{3}\)
(c) 1
(d) \(\frac{3}{2}\)
Answer: (d) \(\frac{3}{2}\)